Weather-strip for sheet-metal window-screens.



W. W. WATSON.

WEATHER STRIP FOR SHEET METAL WINDOW SCREENS. APPLICATION men a. 20.1911.

1,241,687. Patented 0m. 2,1917.

Wanda-ac;

WILLIAM W. WATSON, OF JAMESTOWN, NEW YORK.

WEATHER-STRIP FOR SHEET-METAL WINDOW-SCREENS.

Specification of Letters Patent.

Patented Oct. 2, 191 7.

Application filed March 26, 1917. Serial No. 157,360.

To all whom it may concern:

Be it known that I,W1LLIAM W. WA'rsoN, a citizen of the United States,residing at the city ofJamestown, in the county of Chautauqua and Stateof New York, have invented certain new and useful Improvements infeather-Strips for Sheet-Metal \Vindow-Screens, of which the following,taken in connection with the accompanying drawings, is a specification.

The invention relates for window screens having sheet metal frames andis an improvement upon the screen construction shown in'Let/ters PatentNos. 836,47 5 and 956,239; and the object of the improvement is toprovide a tubular screen frame having a lengthwise attaching groove onits inner edge for the screen fabric and a lengthwise attaching grooveon the outer edges of the top and bottom rails for weather strips; andthe invention consists in the novel features and combinationshereinafter set forth and claimed.

In the drawings, Figure 1 is a plan view of the upper and lower cornersof the screen frame without the screen fabric attached thereto showingthe groove for the weather strip on the upper edge and the weather stripon the lower edge. ig. 2 is a sectional perspective view of a portion ofone of the sides ofthe window screen at line X-X in Fig. l-showing thescreen fabric attached in the groove on the inner edge and a weatherstrip in the groovein the outer edge and extending sidewise; and Fig. 3is a sectional and perspective view at line Y-Y in Fig. 1 of the lowerside of the screen frame showing a lengthwise groove for a weather stripso placed that said weather strip extends in line with the screen frameand can be pressed against the window sill or other support, and Fig. atis a similar view of the opposite side of said screen side. Fig. 5 is aperspective view of the preferred form of the weather stripping.

Like characters of reference refer to corresponding parts in the severalviews.

The numeral 10 designates the tubular sheet metal frame side which iscut and bent from the flat sheet metal strip by means of suitable diesand pressed so as to form the lengthwise groove 11 along the inner edgesof the frame sides.

The numeral 12 designates one of the sides, usually the top rail, whichis preferably formed of one or more strips of sheet to weather stripsmetal shaped to form a. lengthwise groove 11 opening sidewise along theinner edge and a lengthwise groove 13 opening sidewlse along the outeredge, both of said grooves enlarging inwardly. The inner groove 11enlarges inwardly to receive the spline or strip 14: to hold the screenfabric 15 within the groove 11. The outer groove 13 enlarges inwardly toreceive therein the metal bound weather stripping 16; which weatherstripping is preferably made of a folded strip 17 of rubber or similarflexible material havin the edges held by a U shaped metal biming strip18 which fits within and is slidable endwise or may be sprun mto thegroove 13, the turned edge 21 holding said weather strip 16 firmly inplace within the groove 13.

The upper frame side 12 is preferably formed of the two sheet metalstrips 19 and 20, the two lengthwise contacting edge portions of whichare pressed together and -bent into the lengthwise channel groove formalong each of the edges, both edges of the sheet 20 being left short andboth edges of the sheet 19 on the outer side extendin over the edges ofthe sheet 20 into each 0 the grooves 11 and 13 thereby narv rowing themouths of each of the grooves 11 and 13 the thickness of the sheetmetal, which arrangement, taken with the inwardly enlarging oppositeside, so forms said grooves that they may be described as enlarginginwardly,the inwardly turned edge 21 of each of the grooves forming thelocking member which holds the spline or strip 14; in the groove 11, andthe sheet metal folded strip 18 the weather stripping 16 in the groove 1I The contacting surfaces of the edges of the plates 19 and 20 arejoined together and may or may not be soldered or welded to one anotherso that the central tubular portion becomes a closed tube withinterlocked welded, soldered, or otherwise attached edges on oppositesides.

The lower tubular frame side 22 is preferably composed of two sheetmetal strips 23 and 24 in somewhat the same form as the frame side 12,the exceptions being that the groove 11 is sometimes made slightlydifferent, the strip 23 being bent at an inclined angle 25 to preventthe use of sharp hooked instruments upon the screen or erably formed onthe outer side of the rail 22 and opens downward so that said weatherstrip 16 may be pressed downward onto the window sill.

In order to form the lengthwise groove 26 a shoulder 27 is bent in thestrip 23 of the desired width for the groove 26. The groove 26 is formedlargely in the sheet metal strip 24c and the edge 21 overlaps the edgeof the groove side 24, the same as in grooves 11 and '13 therebynarrowing the mouth of the groove 26 so as to retain the folded metalbinding strip 18 of the weather strip 16 within the groove 26, the sameas in groove 13. The contacting surfaces of the strips 23 and 24 may besoldered together or otherwise attached so as to render the frame side22 as rigid as possible and thereby give the required stiffness to theentire screen frame.

The corners of the screen frame are preferably mitered and united bymeans of sweating, bolting, screwing, soldering, welding, or anysuitable method. The inner corners are braced by extending the foldedinner edges so as to interlap upon one another, as shown at 28, thegroove side being bent to one side as shown at 29 sufficiently toreceive the folded end of the adjacent frame side and the lapped endsare soldered, welded or otherwise fastened together so as to firmly holdthe same. In the beveled inner edge 25 of the lower rail the folded end28 is lapped within said edge 25 within the groove 11 and fastenedthereto thereby strengthening the lower corners.

I claim as new 1. In a window screen,a sheet metal frame having agroove, a folded strip of resilient material, and a strip of sheet metalfolded over the edges of said. folded strip to bind the same andreceived in the frame groove.

2. Inawindow screen,a sheet metal frame having a. groove, a strip ofresilient material, and a strip of sheet metal folded over the edges ofsaid folded strip to bind the same, said frame having an inturned sheetmetal edge extending into the groove thereof to interlock with the edgeof said folded strip of sheet metal.

3. In a sheet metal window or screen, the combination of the frame witha groove meme? projection to lock the casing in the groove.

5. In a sheet metal window or screen, a

frame having a' groove, a flexible strip, a

casing composed of a strip folded over said flexible strip for holdingsame, and means carried by the casing to automatically lock the casingin the groove by engagement with an edge of said folded strip and uponmovement of the easing into the groove. v

6. In a sheet metal window or screen, a frame having a groove, aflexible strip, a casing for holding said strip, and means in the grooveto lock the casing, a wall of said groove being capable of flexure toallow said casing to spring over the locking means.

7. In a sheet metal window or screen, a frame formed of a member shapedto form two grooves and a second member connected to the first memberand having its opposite edges extending into the respective grooves, aflexible strip, and a casing for holding the strip received in one ofthe grooves and engaged with one of said edges to lock the casingtherein.

8. In a window or screen, a tubular metal frame formed to have a grooveand having an inturned edge of the metal extending into the groove, aflexible strip, and a holder of U-shape in cross-section receiving saidstrip, the free edge of one of the legs of the U-shaped holder beingengaged with said inturned edge of the frame to lock the holder againstmovement out of the groove.

In testimony whereof I have afiixed my signature in the presence of twowitnesses.

WILLIAM W. WATSON.

